Cross-Platform Chat Security: End-to-End Encryption Arrives for Android and iPhone
For years, Android users have enjoyed end-to-end encryption (E2EE) on Rich Communication Services (RCS) for device-to-device chats. However, conversations between Android and iPhone lacked this privacy layer, leaving cross-platform texts potentially exposed. Now, Apple has integrated interoperable E2EE for RCS into the iOS 26.5 release candidate, and the feature is rolling out in beta. This means both Android and iPhone owners can finally text each other securely, regardless of their device ecosystem. Below, we answer key questions about this game‑changing update.
What exactly is the new cross‑platform encryption feature?
The new feature brings end‑to‑end encryption (E2EE) to rich communication services (RCS) messages sent between Android and iPhone users. Previously, E2EE was available only within Android’s own RCS chats (e.g., between two Google Messages users). Now, Apple has added interoperable E2EE to RCS in iOS 26.5, enabling secure texts between the two platforms. This means messages are encrypted on the sender’s device and can only be decrypted by the intended recipient, keeping conversations private even if intercepted in transit.
When will this feature be available to users?
The feature is currently rolling out in beta to iPhone users running iOS 26.5. Apple released the iOS 26.5 release candidate in late April 2025, and the encryption capability is part of that update. Android users need the latest version of Google Messages installed to benefit. The rollout is gradual, so not all users may see it immediately. Once fully deployed, both platforms will automatically apply E2EE to RCS chats when compatible.
Which iPhones and carriers support the new encryption?
iPhone owners must be running iOS 26.5 or later and be on a supported carrier’s network to access the feature. Apple has not published a full carrier list yet, but major carriers such as Verizon, AT&T, and T‑Mobile are expected to support it. The feature works with any iPhone that can run iOS 26.5 (iPhone 12 and newer models). Android devices require Google Messages as the default SMS app and an active internet connection (Wi‑Fi or mobile data).
What do Android users need to do to use the encrypted cross‑platform chats?
Android users must ensure they have the latest version of Google Messages installed. This can be done via the Google Play Store. Additionally, RCS should be enabled in the app’s settings: open Google Messages, tap the three‑dot menu, go to Settings > RCS chats, and turn on “Enable RCS chats.” No further configuration is required. If both parties meet the requirements, conversations will be automatically encrypted—indicated by a lock icon and “Encrypted” label in the chat window.
Why is this update considered a major step for messaging privacy?
Before this update, cross‑platform texts between Android and iPhone relied on SMS/MMS, which lack encryption and can be read by carriers or intercepted. With over two billion smartphone users worldwide, the absence of secure cross‑platform messaging left a huge privacy gap. Adding E2EE to RCS means that everyday conversations—like sharing passwords, personal details, or sensitive discussions—are now protected end‑to‑end. This aligns with growing demand for privacy and brings Android and iPhone users closer to the seamless, secure experience that platform‑specific apps (iMessage, WhatsApp) already offer.
How does this compare to iMessage or WhatsApp encryption?
iMessage has long provided E2EE between Apple devices, but not to Android. WhatsApp offers E2EE across platforms but is a separate app. The new RCS E2EE is built directly into the default messaging apps—Apple’s Messages on iOS and Google Messages on Android—so users don’t need to install extra software. However, unlike iMessage, RCS still requires an internet connection and may not work over SMS fallback. It also doesn’t support all features (e.g., read receipts or typing indicators may remain limited). Nevertheless, it’s a significant improvement for default messaging.
Will existing conversations be automatically encrypted?
Yes, once both users have the necessary software and the feature is active, existing RCS conversations will become end‑to‑end encrypted automatically. No manual action is required. Google Messages will display a lock icon next to the conversation timestamp, and iOS Messages will show a similar indicator. If one user hasn’t updated yet, the chat may fall back to standard RCS without encryption or even SMS. To ensure privacy, both parties should verify they are on the latest versions.